<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
    
    #floater {
    float: left;
    height: 50%;
    margin-bottom: -120px;
}
 
#content {
    clear: both;
    height: 240px;
    position: relative;
}
    </style>
</head>
<body>
    <div id="floater">  
            <div id="content">Content here</div>
    </div>
</body>
</html>